Mining and loading machine.



N. D. LEVIN.

MINING AND LOADING MACHINE.

- APPLICATION FILED AUG-1.1913. 1,290,020. Patented Dec.. 31,1918.

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MINING AND LOADING MACHINE.

APPLICATION msn aus. 1. |913'.

Pun-med Dec. 31.1918.

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m D. LEVIN, OF COLUMBUS, OHIO, ASSIGNOR T THE JEFFREY MANUFACTURINGcomrm, or coimurus, omo, a conromnon or'omo. MINING AND Lonnnvev nacnnm.

Speoloation of Lettera Patent.

Patented Dec. 31, 1918.

Application led August 7, 1913. Serial No. 783,564.

` To all whom z't may concern:

sov

Be it known that I, Nus D. LEvIN, a .citizen of the United States,residing at Columbus, in the county of Franklin and State of Ohio, haveinvented certain new and useful lImprovements in Mining and LoadingMachines, of which the following is a specification, reference being had.therein to the ac companying drawing.

The invention relates to mining and loading-machinespwhich are providedwith means for undermining coal in its natural bed, means for breakingit down out of the said bed, and means for loading it onto cars by meansof which it isremoved from the mine.

I am well aware thatmachines for this class of work have been heretoforeproposed, but according to earlier proposals, machines constructed tocarry on the three operations above enumerated have been adapted onlyto4 a coal face substantially perpendicu` larly. According to invention,the

attack parallelly to the coal face and can undercut and breakdown a longstrip of coal and convey the broken down coal to points` relativelyremote fromv the face. The feeding mechanism and the driving mechanismfor the undercutting mechamachine can be fed msm can be arranged atpoints at one side 'of the vertical planes bounding the active part ofthe undercutting mechanism instead of between the said planes, as in theearlier machines with whi h I am familiar.I This arrangementen'a'tgs theoperative parts to be constructed4 much more simply and strongly. Theprincipal object of my invention, therefore, is to provide. a\ machinehaving its parts arranged .as above described. Another object of theinvention is to pros vide in a machine of this general character apl'ateor pain arranged totravel behind the undercutting' mechanism in theplane'of the bottom thereof to receive thc loosened coal and a conveyerarranged to coperate with the pan to remove material therefrom. Stillfurther objects of the invention are to provide certain improvedfeatures of construction which will following specification.

In order that the scope of my invention may be fully understood I haveshown in fthe accompanying drawings two forms 'of machine embodying theinventionfV It will be understood that the constructions shown -ofa y 3secured to the the main frame be fully apparent from the center.`

are intended merely to be illustrative of the invention and that variousmodifications and changes can be made within the scope of the claimappended to the specification.

Referring to the drawin Figure 1 is a diagrammatic view, in plan,mechanism embodying my invention. Fig. 2 is a diagrammatic view showing,in elevation, the outlines of the vertical cutting mechanism and thebreaking down devices.

Fig. 3 is a sectional view of'a part of one of the cutter heads.

Fig. 4 is a plan view showing somewhat more in detail the machine shoWndiagram matically in Fig. 1. l

Fig; 5 is a side view of the machine shown in Fig. 4. g A

The machine shown in the drawings is provided with an undercuttingvmechanism which is similar to the mechanisms which have been used formining machines for long wall work and dercutting transversely acrossthe face of a mine room. It consists of a cutter chain 1 which is drivenby a sprocket wheel 2 and which travels in guide ways on a cutter-headmain frame casting 4. The sprocket wheel 2 is carried `,bv a verticalhead shaft 5 which is journale in suitable bearings 6 and'7. Near theupper end of the shaft 5 is a master gear 8 which meshes with the pinion9 on the armature shaft of the motor 10. Conveniently located on themain frame is a bracket 11 naled a feed shaft412 carrying a feed rum 13.14 is a rope adapted to be wound at one end upon the feed drum 13 and tobe connected at the other end to a suitable jack 15 which is so locatedthat ,the stress y p will draw the cutterhead into the coal to be cut.Keyed to the lupper end of/ the feed shaft 12 is a worm wheel 16 whichis driven by a worm 17 secured to the shaft 18. The shaft 18 isjournaled in suitable bearings on and carries a ratchet wheel 19 whichcan be engaged by a pawl 20. The pawl is mounted on an arm 21,4 which ismounted to oscillate about the shaft 18 as a By means of the lroel 22the arm 21 isl connected to an shaft 5. ,y ournaled on'the shaft 18 onopposite sides of the ratchet wheel 19 are arms 24 the outer ends ofwhich are connected together by a `trunnioned nut. Threaded in on therope.

1n which is 'oureccentric 23 on the out of engagement 40 the feedmechanism.

45 v'eyer to breaking downof the upper part of the coal.

this nut isa screw 26 which is connected'to the main frame.

arms into the path of the pawl 20 to hold it with the teeth' of theratchet wheel. A hand wheel 28 is secured to the screw 26 and by means of'this hand wheel the screw can be adjusted to move the shield withrespect to the pawl. As the pawl is oscillated by means of the arms 21it will be held out of engagement with the ratchet 19 duringwmoieorless-of its stroke accord,

ing to the position of the shield 27. In this way the operator by meansof the hand wheel 28 cancontrol the rotation of the. feed ,i

drum 13. s 1 The main frame casting 4 is extended over the floor of themine to form a flat plate or pan 29. This plate is positioned in theplane 20 of the bottoni of the korf cutby the undercutting mechanism andis adapted to be pushed under any loose coal or slack and to receive anyooal that may be loosened and broken down upon it. Formed atthe extremeinward and rearward corner of the y plate 29 is` ian-'upwardV extendingflange- 30 to which is secured the frameplate 31 of a vertical cutterhead. A cutterjchain 33 having cutterbits 34 travels in guide ways at`the edge of the frame. plate 31 and is driven j by the headxvsprocket35'. Suitable idler sprockets 36, 37 and 38 are corners of the plate 31.(See Fig'. 2).

Formed on the surface of the iange casting 35 30 yare la plurality ofribs 39 extending horizontally into the kerf formed' by the cutter chainand having outw-ard inclined surfaces i adapted to exert a wedgingaction on the be described will facilitate the Attached to the bed plate29 with its forward edge adjacent the breaking down wedges' 39, 39 is agathering conveyer 40 s of the type in which an endless chain 41,traveling in suitable guides 42, carries horizontally extending iiights43 adapted to gather coal into the trough y44 and conveyit therethrough.The chain 41 is driven by a .suitable head sprocket secuied to a.vertical shaft 45 which is driven lby means of a bevel gear 46. Thisbevel gear 46- meshes with a bevel pinion 47 on a longitudinal driveshaft 48 which is supported in bearing 49,

50 and 51. The shaft 48 is driven from the main shaft 5 by means ofbevel gears 52 and' 53. The foot-sprocket of the conveyer 40 isjournaled on a suitable stub shaft secured to the foot casting L54. Thiscasting 54 is sldable with respect to the main frame Mounted upon thearms 24l is a shield 27 adaptedto be carried by the machine alongstraight lines provided at the this valve the flow of Water can ber of'the conveyer and can be adjustedv by means of the screw 55 .to maintaina proper working tensionin the chain 41.

The shaft 48 carries at a suitable point a bevel gear 56 which mesheswith a bevel gear 57 on a transverse shaft 58. This shaft 58 is mountedbearings 59 and 6L` and carries at its inner end the sprocket wheel 35`for the cutter chain 33.

In order to insure the move ent of the gui-de rail 61 which engagesguides on the main frame of the machine and serves to preventlangulaimovement of the machine.

Extending along the working fac/"e` of the coal and parallel thereto isa conveyer 62 adapted to receive coal from the conveyer 40 and carry itparallelly to the face to con. veniently placed cars at the face. Thisconveyer known form and its details formno part of this presentinvention; In the form shown in the drawings for purposes ofillustration, the conveyer consists of a vsheet iron trough 63 supportedat convenient intervals by legs 64 iioor of the mine.

to move the coal along it. Suitable bars or .rails 66 are secured to thelegs 64 below the trough! to support the return strand of the chain.

As free floating dust rin a coafl mine ris always 4objectionable I haveprovided means for preventing may be formed by theA cutter bits. Withinthe frame castings of the cutter' heads I have` provided passages 67which are connected by pipes 68 and 69 to `a small rotary pump 70 whichcan be driven in any convenient way as for instance from the shaft 48 bymeans of the belt 71. The7 pump 70 draws water from a convenient supplysuch as the reservoir 72 and forces it through the pipes andassagesabove referred to to jet apertures 3, 73 which arelocated at theledges of the cutter heads adjacent the chains. These jet apertures arelocated at the points where the agitation of dust by by moisting` thedust surface to prevent its iiyingfin the air. A yalve 74 is `providedin\.the water supplygpipe and by re lating a minimum which is necessaryfor eectiveA l-aying'of the dust. l

The claim herein relates to constructions having vertically arrangedcutter chains for cutting kerfs on linesinside of the coalface;

and I 'do not .herein claim any of the' 'subjects matter of broaderscope appealing in my copending application Ser. No. 783,565, iled Aug.7, 1913.

What I claim is:

In a coal mining and loading apparatus,

or near the end of may be of any well the escape of such dust as thebitsisgreatest and uced to rovide a with suitable restingdirectly upon theAn endless dr'ag chain 65 travels along the bottom of the trough ILO thecombination of a mainframe, a motor thereon, power devices for movingthe fname along lines outsideof and parallel to the coal face, thecutting mechanism for forming a horizontal kerf at the bottom of thecoal, the endless chain cutting mechanism for Jliorming a verticalkerfginside of the front falceA of the coal, the horizontal platecarried by the vframe and extending through the horizontal kerf, thevertically arranged plate Secured to the inner edge of the aforesaidplateand arranged to support the said endless vertical `kerf--curttin'gchain and to travel in the vertical kerf, breaking-down wedges carriedby the saidvertical/ plate, powervtransmit; ting devices for thevertical` kerf-Lcutting mechanism arranged in the chamber formed 'by thebreaking-down device and behind the In testimony whereof `I ailix mysignaturel in presence of two witnesses.

- NILs D. LEVIN. Witnesses E. 1:.l SNIvnLY,

T. E. Mmmm.

